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Proceedings Paper

Path integrals method and description of a valance band impact ionization under multiphoton heating of electrons
Author(s): Vladimir N. Strekalov
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Paper Abstract

The path integrals method is used for description of electrons heating by laser light and for determining the avalanche ionization rate. The limit of ultra-short pulses is considered as well as the stationary ionization regime. It is shown that multiphoton processes of electrons heating are more important than single-photon ones. A new dependence of threshold values on the laser pulse duration is predicted. Estimates are carried out for thresholds in the system 'Ruby laser radiation-silicon'. The thresholds thus found exceed experimental values. The suggested conclusion is that the processes of electron-phonon scattering cannot provide a rate of energy accumulation required for developing an avalanche.

Paper Details

Date Published: 7 April 1999
PDF: 9 pages
Proc. SPIE 3578, Laser-Induced Damage in Optical Materials: 1998, (7 April 1999); doi: 10.1117/12.344374
Show Author Affiliations
Vladimir N. Strekalov, Moscow State Univ. of Technology Stankin (Russia)

Published in SPIE Proceedings Vol. 3578:
Laser-Induced Damage in Optical Materials: 1998
Gregory J. Exarhos; Arthur H. Guenther; Mark R. Kozlowski; Keith L. Lewis; M. J. Soileau, Editor(s)

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